InterviewSolution
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InterviewSolution
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b¡Describe how you would prepare 500 mL of a0.25 M solution of sodium hydroxide from a 5.0M solution of sodium hydroxide. |
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Answer» Calculate the volume of 5.0 M sodium hydroxide needed to prepare the dilution. Mreagent × Vreagent = Mdilution × Vdilution 5.0 M × Vreagent = 0.25 M × 0.500 L Vreagent = 0.025 L = 25 mL Slowly add 25 mL of 5.0 M sodium hydroxide to a 500-mL volumetric flask half-filled with distilled or deionized water and swirl the flask to mix. Once the solution is at room temperature, dilute to the mark with water and invert the flask several times to mix. |
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